Means for operating adjunctive devices on sawmill carriages



Ze or- Parta'oZ fitrol'e fioss Dogs June '22 d926, 1,590,109

- F. E. MARTIN MEANS FOR OPERATING ADJUNC TIVE DEVICES 0N AWMILL CARRIAGES Original Filed Dec. 4, 1922 2 Sheets-Shem 1 imq June 22 1926.. v F. E. MARTIN MEANS FOR OPERATING ADJUNCIIVE DEVICES 0N SAWMILL CARRIAGES Original Filed Dec. 4.. 1922 2 Sheets-Sheet 2 an-ue ntoa Patented June 22, 1926 onrrsn sra rss liti ant tartar orrrcng FREDERICK MARTIN, OE "WEED, CALIFORNIA, A$SIGNOR TO MARTIN AIR DOG COMPANY, 01" SAN FRANCISCO, CALIFORNIA, A COEPURATION OF CALIFORNIA.

IVIEANS FOR OPERATING ADJUNCTIVE DEVICES ON SA'WMILL CARRIAGES.

Application filed December 4, 1922, Serial No. 604,866. Renewed May 4, 1926.

This invention relates generally to improvements in connection with saw mill machinery, and more particularly to certain instrumentalities whereby the setter may maintain effective control over the operation of necessary adjuncture. devices on such carriage, and at the same time brace himself against being thrown off the carriage during the travel thereof. To this extent, the present application is a division of my application, filed November 25, 1921., Serial No. 517,647.

The setting and clogging of a log on a saw mill carriage has been heretofore accomplished by a setter and by doggers the number of the latter being usually de termined by the number of knees employed. These men, because of the lack of proper provision for them to hold on or brace themselves against displacement, are frequently thrown off the carriage in the necessarily rapid reciprocating travel thereof. In asaw mill carriage however, equipped as described in connection with the above noted application, the doggers usually employed are entirely dispensed with and their work is accomplished by the setter. In such improved mechanism, means are provided whereby the selection of certain desired operations and adjustments of the adjunctive devices on the carriage, as for example, determining the dogs to be operated and their extent of operation, the taper adjustment of the knees, or the like, for a subsequent operation of such parts, may be made While the carriage is moving and the parts are in a previously adjusted position. Thus, in the operative movement of the carriage, the hands of the setter are fully occupied in making the necessary selections for the subsequent operations of the adjunctive devices, and during the return movement of the carriage, the setter is completing these selections and may manipulate the adj unotive devices in accordance with such selections. Therefore during the reciprocal travel of the carriage, the setter is practically precluded from using his hands as a means for maintaining his position on the carriage, and it is therefore of importance that some ad'- ditional safeguard be provided, which the setter without recourse to his hands, may utilize as a means for causing the operation of the previously selected adj unctive devices,

and at the same time efiectively brace himself against being thrown off the carriage in the reciprocal travel of the latter.

To secure this result and as an adjunct to the seat for the setter, I provide means located adjacent the seat, through which the operator by desirable foot movement can perfect the operation of the desired adjunctivedevices, and at the same time, through such foot means, brace himself against displacement from the seat in the reciprocal travel of the carriage.

Furthermore, the present invention con templates a means for delivering a blast of air adjacent to the bottom of the knees to prevent the accumulation of the usual sa'w dust, chips and other refuse, which heretofore has prevented accurate positioning of the log when setting and has necessitated removal of such refuse by hand. As this removal of refuse is thoroughly accomplished by the blast of air, which blast is obviously controlled through the opening and closing of a valve for example, it is contemplated in the present application to utilize a part at least of the setter bracing means as the control for such air blast.

Therefore, the object of the present invention is to provide on a saw mill carriage having the usual seat for the setter and set works, further adjunctive devices, such for instance, as dogs and refuse removing means, and to provide operating members for the control ofsuch adjunctive devices and locate these operating members adjacent the setters seat and for the convenient reception of his feet, these operating members being for example in the form of foot pedals, so that thereby the setter entirely without recourse to his hands in any way whatever, may operate these adjunctive devices, and at the same time brace himself against being thrown from the carriage during the travel thereof.

The invention also contemplates acertain limited free movement or lost motion so called in these bracing devices or foot pedals without appreciable effect upon the adjunctive devices which they are otherwise designed to operate, whereby a limited involuntary movement of the setter in effectively bracing himself against displacement under any usual or unusual conditions of carriage movement may be permitted without results, in ensuing operation of the adj unctive devices, thereby permitting the setter to properly adjust himself for bracing with'a the limits of the lost motion permitted and requiring a definite voluntary movement of such foot pedals to accomplish the operation of such adjunctive devices.

The invention is illustrated in the accompanying drawings, in which:

1 is a plan view of a saw mill carriage provided with adjunctive devices, such for example as shownin my co-pending application referred to, the combined bracing and operating means being shown in position tl ereon.

Fig. 2 is a broken perspective view showing'means for directing the air blast adjacent the front of the knees for removing refuse therefrom.

Fig. 3 is sectional view of one of the bracing elements or pedals showing the same connected for. the control of the valve governing the air blast for removing the from the knees.

Fig. l 1s a detail perspective view of the refuse foot pedal and a part of the mechanism operated thereby to show particularly the means for providing lost motion between the parts.

Fig. 5 is a detail view of the means for permitting lost motion between the elements, the parts being in normal position.

Fig. 6 is a similar view but illustrating the position of the elements when the pedal is operated.

The saw mill carriage here shown, which as previously stated is constructed in accordance with that described in my co-pending application referred to, may for convenience, be briefly stated to include a carriage frame 1 provided with knees 2having dogs 3 cooperating therewith for engaging the side of a log, dogs l cooperating therewith for engaging the top of a log, and dogs 5' for engagingthe bottom ofa log,'there being also provided means 6, whereby the knees may be tapered, the usual set works mechanism and control therefor 7 and a unit control 8, in the use of which the various dogs and other adjunctive devices may be set for a predetermined operation, during and while such adjunctive devices are in cooperation with a log, and then subsequently operated as a unit for the necessary cooperation with the log.

The setters seat 9 is arranged so that the setter may conveniently control by his hands the set works and the means for se lecting or predetermining a succeeding operation of the adjunctive devices, and these selecting or determining-operations are or may be carried out while the carriage is in movement in either direction, as they are of course without direct effect upon the said adjunctive devices until the single operating lect or predetermine a subsequent operation of certain of such adjunctive devices and reserve the operation of the selected devices for the unit control operation, while at the same time independently operatingsuch of the adjunctive devices as it is desired to 0perate individually for the particular result. Under any circumstances, it will be ap arent that the hands of the setter are ully employed in the selecting and setting and individual operation of any of such adjunc tive devices during the reciprocal travel of the carriage, and therefore if he is to be safeguarded against being thrown from'the carriage, means must be provided for such safeguarding, which do not require the use of his hands and which will permit him to eiectively brace himself. If as contemplated, these bracing means have the additional function as operating members, it will be apparent that the setter must be constantly in touch with these bracing means in order to carry out the operations which they control, so that therefore the bracing action by the operator will be intuitively responsive to the necessity therefor as he is always in position to brace himself.

The bracing means here shown comprises a pedal 10 for the reception of the right foot of the setter and a pedal 1.1 for the reception of his left foot, both arranged of course to conveniently receive his feet and permit the necessary bracing action while he is occupying seat 9. The means for operating the unit control 8 is connected to the pedal 10, so that following a certain operation of the pedal 10, the unit controlis operated. The'pedal 11 is adapted to control a valve 12 in a pipe 13 leading from a suitab'le source of air under pressure and by branch pipes 14 to the forward lower por tion of the knees indicated at 15, so that upon opening the valve, a blast of air is directed at this portion of the knees to insure cleaning away any accumulated refuse.

The pedals 10 and 11 have suitable base portions 16,011 which the foot rests and rigid edge flanges 17 of sufficient height-to prevent the possibility of the foot of the operator slipping off the pedal. These pedals are supported for pivotal movement as indicated at 18, being so mounted that the operator may, by suitable action of the foot,

shove the main length of the pedal up or down.

\Vhile the specific unit control and means whereby the adj unctive devices governed by such control are selectively set and operated by such unit control, or selectively operated at will forms no part of the present invention, it is deemed advisable to briefly and generally describe this structure, in order that an understanding may be had of the duties of the setter in connection there with.

As pointed out in the pending application referred to, the dogs and the knees when tapering, are all controlled by the setter through the medium of the unit control and the selective means associated therewith, and operated under certain con-, ditions by one of the pedals as 10, while the refuse remover is operated by manipulation of the other pedal as 11. The unit control forms as one of its essential components, means for selecting any or all of the dogs, or any combination of dogs for holding a log, or the adjustment of the knee or knees for taperinga log, and the selection when made is operated by rocking the pedal 10. The combination may be changed for a future selection of elements and then operated or thrown out of operation without disturbing the others, or others not previously operatedmay be brought into operation and all returned to normal position by reversely rocking the pedal. The selection of elements and the means provided for possible operation while the log is held up to the knees, is susceptible to a variety of changes to meet contingencies, which may arise while sawing, and these possibilities are due largely to the provision of the lost motion between the pedal and the valves in the unit control, and in order to make it as convenient as possible for the setter, this lost motion is controlled by the operation of the pedal. In all instances except where the setter operates a valve by hand and temporarily manipulates the element and returns same to normal position by the same means, the controlling mechanism is returned to its normal position by actuating the foot pedal.

As illustrated particularly in Fig. 4, I have illustrated what may be termed a lost motion between the pedal 10 and the direct actuation of the unit control, this lost motion permitting a play in the connections indicated at 19 and 20, so that the pedal 10 may be moved to an appreciable extent without affecting the unit control. A similar lost motion is indicated at 21, Fig. 3, between. the pedal 11 and the valve 12, so that said pedal 11 is also capable of a limited free movement without affecting the valve. Thus the setter by experience and practice is aware of just how far the pedals may be shifted or operated without correspondingly affecting the mechanism which they are designed to actuate, and to the extent of this limited free movement, the setter intuitively takes advantage of the free movement of the pedals in accommodating such .to the most effective bracing against being thrown off the carriage.

' The pedals are so disposed with reference to the seat that the setter can assume a comfortable working position, and at the same time effectually brace himself against being thrown off in the reciprocal move ment .of the carriage. At the same time, the setters hands are free to operate the set works mechanism and the unit control without concerning himself as to grasping some part of the mechanism with his hands to hold himself on the carriage. pedals serve as a means for obtaining the proper purchase of the feet of the set-ten to prevent him being thrown off, he can nevertheless rock the pedals at his pleasure to return the various devices to normal position, or for changing the pre-selected devices for other devices, or blow the refuse away-from the knee blocks at any time,

whether the carria e be stationar or in movement. V I

In the quick reverse movement of the carriage, the setter will in his attempt to brace himself generally rock the pedal with in a given range, until it reaches a position where his leg will comfortably brace his body. This movement however, will not actuate the unit control in view of the lost motion provided between the parts. Of course, when the proper purchase is obtained, the setter by intuition rocks the pedal in a direction to hold or operate the elements as desired.

Thus, it will be seen that the arrangement of the seat and pedals affords safety means, by which the setter may brace himself against being thrown off the carriage while the latter is in movement, and that such arrangement additionally provides means for operating adjunctive devices which would otherwise require the use of the hands. It is obvious that by the use of the improvement, better and quicker work will be accomplished, not only from the stand point of convenience to the setter, but because of the feeling of safety on the part of the setter in the operation of the carriage.

Claims:

1.. The combination with a saw mill carriage having the usual knee set works and further adjunctive devices, of an operators seat placed conveniently for the set works control, and a pair of pedalsassociated with and operating said adjunctive devices, and so formed and placed that the operator may thereby brace himself on the seat against any action of the carriage otherwise tending to his displacement from the seat.

2. The combination with a saw mill carriage having the usual knee set works and further adjunctive devices, including fluid While the pressure means for blowing away saw dust from the faces of the knees, of an operators seat placed conveniently for the set works control, and a pair of pedals, one of which operates certain of the adjunctive devices and the other of which operates and controls the means for blowing away saw dust from the faces of the knees, the pedals being so formed and placed that the operator may thereby brace himself on the seat as against any action of the carriage otherwise tending to his displacement from the seat; i

The combination with a saw mill carriage having the usual knee set works and set works control, means for blowing away saw dust or the like from the faces of the knees, and a pair ofpe'dals, one of which operates the means for blowing away saw dust or the like from the faces of the knees,

the pedals being so formed and placed that the operator may thereby brace himself on the seat as against any action of the carriage otherwise tending to his displacement from the seat.

at. The combination with 'a saw mill carriage having the usual knee set works and further adjunctive devices, of an operators seat placed conveniently for the set works control, and a pair of pedals associated with and operating said adjunctive devices, the construction between certain of the adjunctive devices and one of the pedals providing lost motion between the parts, the pedals being so formed and placed that the operator may thereby brace himself on the seat as against any action of the carriage othewise tending to hisdisplacement from the seat, the lost motion permitting of limited movement of the pedal during such bracing operation without actuating the ad junctive devices 5. The combination with a saw mill carriage having adjunctive devices, including a means for blowing saw dust from the faces of the knees, of a seat for the operator, and elements adapted to control the adjunctive devices and saw (lust blowing means, said; elements being so located with reference to the seatfor the operator as to afford means for operating said adjunctive devices and saw dust blowing means at will, and'at the same time provide for bracing the operator in his position on the seat to prevent the rapid reciprocation of the carriage throwing him from the seat.

6. The combination with a saw mill carriage, having a means for blowing saw dust from the kneesv and further adjunetive devices of an operators seat, and separate foot pedals controlling respectively the saw dust blowing means and the said adjunctive devices,said pedals adapted to receive the respective feet of the operator and being so located with reference to the seat as to permit the operator to bracehimF-elf in the seat against displacement in the rapid reciprocation of the'carriage, the pedals hav ing a free limited movement without affect ing a control operation, to. permit the operator linclingthe most eliective bracing position through the limited movement of the pedals without corresponding control movement of the pedals.

a 7. The combination with a saw mill carriage, having a means for blowing saw dust from the'knees and further adjunctivedevices, of an operators seat, a pedal adapted to control said adjunctive devices and ar ranged in such relation to the seat as to receive one foot of the operator, and a foot support to receive'the other foot with such foot support controlling the saw dust blowing means, the pedal and foot support being so arranged relative to each other and to the seat that the operator may thereby brace himself through such'pedal, foot support, and seat, against being displaced from the carriage in the rapid reciprocation thereof.

8. The combination with a saw mill carriage of adjunctive devices for cooperation with a log on said carriage, means permitting said adjunctive devices to be selectively set, means for operating the set devices, said means including a foot pedal, an operators seat, and a further foot support, said foot pedahsat, and foot support, being so relatively arranged that the operator may thereby brace himself against being thrown from the carriage in the reciprocatory travel thereof, the pedal providing further control of the adjunctive devices without interfering with the bracing effect, whereby the hands of the operator are at all times free for manipulation, setting and otherwise manipulating the adjunctive devices.

9. The combination with a saw mill carriage having adjunctive devices for cooperation with a log and additionally a means for blowing saw dust from the knees, of an operators seat, and means whereby the operator may control the operation of theadjunctive devices and saw dust blowing means by his feet, said control means being so arranged relative to the seat and to each other that the operator may thereby brace himself in the seat against being thrown off in the reciprocation of the carriage.

In testimony whereof I affix my signature.

FREDERICK E. MARTIN. 

